WO2011156213A1 - Process for transporting fracture ("frac") fluid additives to oil and gas wells utilizing ion exchange resin - Google Patents
Process for transporting fracture ("frac") fluid additives to oil and gas wells utilizing ion exchange resin Download PDFInfo
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- WO2011156213A1 WO2011156213A1 PCT/US2011/039003 US2011039003W WO2011156213A1 WO 2011156213 A1 WO2011156213 A1 WO 2011156213A1 US 2011039003 W US2011039003 W US 2011039003W WO 2011156213 A1 WO2011156213 A1 WO 2011156213A1
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- WIPO (PCT)
- Prior art keywords
- ion exchange
- exchange resin
- process according
- frac fluid
- underground
- Prior art date
Links
- 239000003456 ion exchange resin Substances 0.000 title claims abstract description 58
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 58
- 239000012530 fluid Substances 0.000 title claims abstract description 50
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000000654 additive Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000000996 additive effect Effects 0.000 claims abstract description 18
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- 239000002455 scale inhibitor Substances 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 150000003839 salts Chemical group 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 108010064470 polyaspartate Proteins 0.000 claims description 5
- GYBINGQBXROMRS-UHFFFAOYSA-J tetrasodium;2-(1,2-dicarboxylatoethylamino)butanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC(C([O-])=O)NC(C([O-])=O)CC([O-])=O GYBINGQBXROMRS-UHFFFAOYSA-J 0.000 claims description 5
- PQHYOGIRXOKOEJ-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid Chemical group OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O PQHYOGIRXOKOEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 239000003112 inhibitor Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229940123973 Oxygen scavenger Drugs 0.000 claims description 3
- 229920002197 Sodium polyaspartate Polymers 0.000 claims description 3
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical group CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 3
- 238000005349 anion exchange Methods 0.000 claims description 3
- 239000003139 biocide Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 229940080260 iminodisuccinate Drugs 0.000 claims description 3
- 229920005990 polystyrene resin Polymers 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 125000001302 tertiary amino group Chemical group 0.000 claims description 3
- 229940080258 tetrasodium iminodisuccinate Drugs 0.000 claims description 3
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims 2
- 238000005755 formation reaction Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 14
- 239000011324 bead Substances 0.000 description 11
- 229920000642 polymer Polymers 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 238000005342 ion exchange Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920006216 polyvinyl aromatic Polymers 0.000 description 3
- 239000003361 porogen Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- XWJBRBSPAODJER-UHFFFAOYSA-N 1,7-octadiene Chemical compound C=CCCCCC=C XWJBRBSPAODJER-UHFFFAOYSA-N 0.000 description 2
- GPXCJKUXBIGASD-UHFFFAOYSA-N 1-phosphonobutane-1,2,4-tricarboxylic acid Chemical compound OC(=O)CCC(C(O)=O)C(C(O)=O)P(O)(O)=O GPXCJKUXBIGASD-UHFFFAOYSA-N 0.000 description 2
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229920000805 Polyaspartic acid Polymers 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- 150000001491 aromatic compounds Chemical class 0.000 description 2
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007306 functionalization reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 mefhacrylonitrile Chemical compound 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- XKJCHHZQLQNZHY-UHFFFAOYSA-N phthalimide Chemical compound C1=CC=C2C(=O)NC(=O)C2=C1 XKJCHHZQLQNZHY-UHFFFAOYSA-N 0.000 description 2
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- WVAFEFUPWRPQSY-UHFFFAOYSA-N 1,2,3-tris(ethenyl)benzene Chemical compound C=CC1=CC=CC(C=C)=C1C=C WVAFEFUPWRPQSY-UHFFFAOYSA-N 0.000 description 1
- PRBHEGAFLDMLAL-UHFFFAOYSA-N 1,5-Hexadiene Natural products CC=CCC=C PRBHEGAFLDMLAL-UHFFFAOYSA-N 0.000 description 1
- IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical compound C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- IWTYTFSSTWXZFU-UHFFFAOYSA-N 3-chloroprop-1-enylbenzene Chemical compound ClCC=CC1=CC=CC=C1 IWTYTFSSTWXZFU-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229960004585 etidronic acid Drugs 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- DBSDMAPJGHBWAL-UHFFFAOYSA-N penta-1,4-dien-3-ylbenzene Chemical compound C=CC(C=C)C1=CC=CC=C1 DBSDMAPJGHBWAL-UHFFFAOYSA-N 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229960000834 vinyl ether Drugs 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/70—Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
Abstract
There is disclosed a process for transporting fracture fluid additives underground to oil and gas wells by attaching a fracture fluid additive to an ion exchange resin and flowing the ion exchange resin underground and thereafter releasing the frac fluid additives from the ion exchange resins and also there is provided the use of an ion exchange resin as a proppant and a frac fluid lubricant.
Description
PROCESS FOR TRANSPORTING FRACTURE ("FRAC") FLUID ADDITIVES TO
OIL AND GAS WELLS UTILIZING ION EXCHANGE RESIN
The present invention relates generally to a process for transporting fracture fluid additives to oil and gas wells via ion exchange resin and also to the ion exchange resins carrying such fracture fluid additives.
BACKGROUND OF THE INVENTION
The extraction of natural gas from various shale formations has grown rapidly due to recent technology advances in horizontal drilling and hydraulic fracturing. Hydraulic fracturing overcomes the impermeability of shale relative to the release of natural gas trapped in the rock formation. Horizontal drilling allows greater gas collection from each well out of the relatively shallow but expansively wide shale formations. While these technologies have allowed extraction of natural gas from shale formations such as the Marcellus Shale formation in the eastern United States to be economically feasible, implementing these technologies is expensive.
Shale formations, such as the Marcellus Shale formation, may have a very tight structure that does not allow trapped natural gas to migrate through the formation easily. To facilitate gas movement, the shale formation must be fractured and fissures induced in the rock. To accomplish this, fluids, particularly water with a solid such as
sand, are pumped at high pressure to crack the rock formation and wedge it open. The fluid used for hydraulic fracturing is known as "frac fluid." Additives may be used with the frac fluids. These so-called "frac fluid additives" may comprise a myriad of additive compounds of specific type and quantity necessary to meet, among others, the requirements of the shale formation, well depth and well characteristics. Frac fluid additives may comprise, and/or exclude, one or more of scale inhibitors, corrosion inhibitors, biocides, viscosity modifiers, lubricants, surfactants, oxygen scavengers, proppants, and other additive compounds appreciated by one skilled in the art. One notable type of frac fluid additive is a proppant additive, which is a solid, such as sand, that wedges the induced fissures open. Depending upon the geology of the area around the well, many of the frac fluid additives get diluted and washed away by the natural intrusion of underground water that can not be avoided. This water intrusion necessitates the continual addition of additional frac fluid additives that is costly and, in some cases, may be highly impractical.
BRIEF SUMMARY OF THE INVENTION
There is broadly contemplated, in accordance with at least one presently preferred embodiment of the present invention a process for depositing a frac fluid additive underground comprising: a) providing an ion exchange resin having at least one frac fluid additive operably attached thereto, b) depositing said ion exchange resin underground, and c) releasing/detaching said at least one frac fluid additive from the ion exchange resin.
In addition there is contemplated the use of an ion exchange resin that is a crosslinked, weakly basic, monodisperse, macroporous, anion exchange polystyrene resin functionalized with tertiary amine groups.
Furthermore, it is contemplated that the frac fluid additive attached to the ion exchange resin is a scale inhibitor. There is also provided the use of an ion exchange resin as a proppant per se and/or as a lubricity additive to a frac fluid.
In addition, there is also provided a process of using the above ion exchange resins comprising mixing the same with a frac fluid and flowing the mixture underground. Said mixing may occur aboveground or underground. As used herein underground shall include, inter alia, subterranea, such as underground shale formations, gas wells and oil wells.
For a better understanding of the present invention, together with other and further features and advantages thereof, reference is made to the following description, taken in conjunction with the accompanying Examples, and the scope of the invention will be pointed out in the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In accordance with at least one presently preferred embodiment of the present invention there is disclosed a process for attaching one or more frac fluid additives to an ion exchange resin. The tenacity of the attraction can be varied via the selective use of specific ion exchange resins and/or their modification via functionalization of the ion exchange resins. These so-formed modified ion exchange resins, having one or more frac fluid additives attached thereto, can be deposited underground into, for example, oil and/or gas wells. Thereafter, the frac fluid additives of the modified ion
exchange resins can be subsequently released from the ion exchange, thereby allowing for their controlled dosing and use.
The principles of the exchange of ionized compounds via ion exchange resins is well known. Broadly stated, ion exchange is the exchange of ions between two or more ionized species located in different phases, at least one of which is an ion exchanger. Such ion exchange materials generally have fixed functional groups or sites capable of holding and exchanging various charged counter-ions. In a preferred embodiment, there is made use of crosslinked polymeric bead type ion exchange resin. The crosslinked bead type ion exchange resin may be either heterodispersed or monodisperse as is known to the skilled artisan. In the preferred embodiment use is made of monodisperse ion exchange resin. The process for preparing monodispersed bead ion exchange resin is also known such as, for example, fractionation, atomization, jetting, or by the seed-feed technique (reference is hereby made, for example, to US 6,221 ,287).
The monodisperse bead polymers, the precursor of the ion exchange resin, can be produced, for example, by bringing to reaction monodisperse, if desired,
encapsulated, monomer droplets consisting of a monovinyl aromatic compound, a polyvinylaromatic compound, and an initiator or initiator mixture, and if appropriate a porogen in aqueous suspension. To obtain macroporous bead polymers for producing macroporous ion exchangers, the presence of porogen is utilized.
The various production processes of monodisperse bead polymers both by the jetting principle and by the seed-feed principle are known to those skilled in the art. At this
point, reference may be made to U.S. Pat. No. 4,444,961 , EP-A 0 046 535, U.S. Pat. No. 4,419,245 and WO 93/12167.
Monovinylaromatic unsaturated compounds used according to the invention are preferably compounds such as styrene, vinyltoluene, ethylstyrene, alpha- methylstyrene, chlorostyrene or chloromethylstyrene. Polyvinylaromatic compounds (crosslinkers) preferably used are divinyl-bearing aliphatic or aromatic compounds. Particularly preferably, use is made of divinylbenzene, divinyltoluene,
trivinylbenzene, ethylene glycol dimethacryiate, trimethylol propane trimethacrylate, hexa-l,5-diene, octa- 1 ,7-diene, 2,5-dimethyI- 1 ,5-hexadiene and also divinyl ether. According to a preferred embodiment, the bead polymer is a monodisperse crosslinked polystyrene material.
In addition to the monodisperse gel-type ion exchangers, according to the invention, use may be made of monodisperse ion exchangers having a macroporous structure.
In addition to the use of aromatic monomers as the starting material for the polymeric ion exchange resin (for example, vinyl and vinylidene derivatives of benzene and of naphthalene (vinylnaphthalene, vinyltoluene, ethylstyrene, alpha-methyl-styrene, chlorostyrenes, and, preferably, styrene), various non-aromatic vinyl and vinylidene compounds may also be employed. For example, acrylic acid, methacrylic acid, Ci- C8 alkyl acrylates, C|-C8 alkyl methacrylates, acrylonitrile, mefhacrylonitrile, acrylamide, methacrylamide, vinyl chloride, vinylidene chloride, and vinyl acetate.
The subsueqent functionalization of the bead polymer ion exchange resin thereby provides a functionalized ion exchange resin is also generally known to those skilled in the art. For example, DE-A 10200601737, hereby incorporated by reference, describes a process for producing monodisperse macroporous basic ion exchangers having weakly basic, medium-basic or strongly basic groups by what is termed the phthalimide process, by a) reacting monomer droplets of at least one
monovinylaromatic compound and at least one polyvinylaromatic compound and also a porogen and an initiator or an initiator combination to give a monodisperse crosslinked bead polymer, b) amidomethylating this monodisperse crosslinked bead polymer with phthalimide derivatives, c) reacting the amidomethylated bead polymer to give a basic ion exchanger having aminomethyl groups and d) reacting the basic ion exchanger by alkylation to give weakly basic to strongly basic anion exchangers having secondary and/or tertiary and/or quaternary amino groups.
In a preferred embodiment, preference is given to the use of a crosslinked, weakly basic, monodisperse, macroporous, anion exchange polystyrene resin being functionalized with tertiary amine groups, for example that which is commercially available from LANXESS Deutschland GmbH under the brand name LEWATIT® MP62.
To the ion exchange resins prepared according to the method as described above, there is preferably attached one or more frac fluid additives as mobile counterion of the functionalized ion exchange resin. Such frac fluid additives may comprise and/or exclude one or more of scale inhibitors, corrosion inhibitors, biocides, viscosity modifiers, lubricants, surfactants, oxygen scavengers, proppants, and other additive
compounds. It being understood as discussed herein that the ion exchange resin of the invention may itself serve as proppant rather than carrying the same. Many frac fluid additives are positively or negatively charged and can be attached to conjugate anionic or cationic ion exchange resins. Scale inhibitors in accord with a preferred embodiment may include or exclude, without limit, chelating forms, crystal-formation interrupters, and others as are known to those skilled in the art. Scale inhibitors may be broadly characterized as either controlling the formation of mineral scale or disrupting the growth of scale crystals. The former category includes phosphonates, such as chelating phosphonates, including amino phosphonic esters, for example amino trimethylene phosphonic acid, organophosphonic carboxylic acids such as 2- phosphonobutane- 1 ,2,4-tricarboxylic acid (PBTC) (e.g. Bayhibit® AM),
hydroxyethanediphosphonic acid and other analog compounds based upon phosphonic acid, and higher molecular weight organic acids such as iminodisuccinic acid (e.g., Baypure® CX 100). The latter category includes scale inhibitors based on low molecular weight polymers that adhere to crystal structures and, thereby, limit crystal growth and/or weaken the crystal growth in scale formation. The most common polymers for this purpose are polyacrylates and polyaspartic acid (e.g., Baypure® DS).
Preference is hereby given, in one embodiment, to the attachment of various scale inhibitors. Thus, for example, in one embodiment there is attached the chelating agent iminodisuccinate via its salt form tetrasodium iminodisuccinate. The latter being commercially available from LANXESS under the brand name Baypure CX 100. In another embodiment there is attached polyaspartate via its salt form sodium polyaspartate. The same being commercially available, for example, from LANXESS
under the brandname Baypure DS 100. In another embodiment there is attached PBTC. The same being commercially available in aqueous form, for example, from LANXESS under the brandname Bayhibit* AM.
As indicated above, the so-formed modified ion exchange resins, having one or more frac fluid additives attached thereto, can be deposited underground into, for example, oil and/or gas wells. Thereafter, the frac fluid additives of the modified ion exchange resins can be subsequently released from the ion exchange, thereby allowing for their controlled dosing and use. For example, where the polyaspartic acid scale inhibitor (BAYPURE® DS) is attached to the weakly basic ion exchange resin LEWATIT® MP62, the scale inhibitor (being an oligomer of an organic acid) can be dislodged from the ion exchange resin with a strong mineral acid, such as hydrochloric acid which is commonly used in frac fluid related operations. In this manner, release of the scale inhibitor can be controlled over time by the judicious addition of hydrochloric acid to adjust the pH of the frac fluid. Alternatively, the scale inhibitor may be released at a reduced rate by controlling the amount of acid added and/or the use of water instead of acid. Also, the scale inhibitor can be attached to a mixture of weakly basic and strongly basic ion exchange resins to affect a time release of the inhibitor.
Other benefits of combining frac fluid additives with the ion exchange resin can be realized due to the properties of the ion exchange resin prepared. The ion exchange resin, being a dense solid of considerable strength, additionally serves as a proppant per se whose size and size distribution can be selected by the manufacturing process of the resin. As such, the ion exchange resin may carry both particular frac fluids and
also serve as a frac fluid proppant itself. Secondly, the use of ion exchange resin can reduce the amount of sand used in the frac fluid thereby reducing the abrasiveness of the frac fluid. Thirdly, the physical nature of the ion exchange resin, for example, as a dense sphere similar to a ball bearing shape may impart improved lubricity to the frac fluid.
Although the preferred embodiment of the present invention has been described herein with reference to the above discussion and below Examples, it is to be understood that the invention is not limited to that precise embodiment, and that various other changes and modifications may be affected therein by one skilled in the art without departing from the scope or spirit of the invention.
EXAMPLE:
A chelating agent Lanxess BAYPURE® CX 100, was attached to a weakly basic ion exchange resin, in this case Lanxess LEWATIT® MP62. This was accomplished by adding 1000 mL of the resin to 816 grams of water in a glass Erlemeyer flask. To this was added 186 grams of Lanxess BAYPURE® CX 100 which is a solution of 34% iminodisuccinic acid sodium salt in water. The mixture was gently stirred and the solution pH adjusted to 6 with the addition of 15%(wt) hydrochloric acid. The mixture was continually stirred and kept at 60°C and pH 6 for 24 hours. The modified resin was filtered from the reaction liquids and then rinsed with deionized water to make the final product.
Claims
We claim:
1. A process comprising:
providing an ion exchange resin having at least one frac fluid additive being operably attached thereto,
depositing said ion exchange resin underground, and
detaching said at least one frac fluid additive attached to said ion exchange resin from the ion exchange resin.
2. The process according to Claim 1 , wherein said ion exchange resin is a
crosslinked, weakly basic, monodisperse, macroporous, anion exchange polystyrene resin being functionalized with tertiary amine groups.
3. The process according to Claim 1 , wherein said frac fluid additive attached to said ion exchange resin is selected from scale inhibitors, corrosion inhibitors, biocides, viscosity modifiers, lubricants, surfactants, oxygen scavengers, proppants, other additive compounds, and combinations thereof.
4. The process according to Claim 1 , wherein said frac fluid additive attached to said ion exchange resin is a scale inhibitor.
5. The process according to Claim 4, wherein said scale inhibitor is polyaspartate attached via its salt form sodium polyaspartate.
6. The process according to Claim 1 , wherein said depositing step comprises adding the ion exchange resin to a frac fluid aboveground and thereafter flowing said frac fluid underground.
7. The process according to Claim 6, wherein said underground is subterranea.
8. The process according to Claim 1 , wherein said detaching step comprises contacting underground the ion exchange resin having at least one frac fluid additive operably attached thereto with a strong mineral acid.
9. The process according to Claim 8, wherein said strong mineral acid is
hydrochloric acid.
10. A process for inducing fissures underground, comprising:
providing a proppant to a frac fluid aboveground, wherein said proppant comprises an ion exchange resin,
subsequently flowing said ion exchange resin underground thereby inducing said fissures.
1 i . A process for increasing the lubricity of a frac fluid, comprising:
providing an ion exchange resin having at least one frac fluid additive attached thereto, and
contacting said ion exchange resin with said frac fluid.
12. The process according to Claim 1 1 , wherein said scale inhibitor is
iminodisuccinate attached via its salt form tetrasodium iminodisuccinate.
13. The process according to Claim 1 1, wherein said scale inhibitor is polyaspartate attached via its salt form sodium polyaspartate.
14. The process according to Claim 1 1, wherein said scale inhibitor is 2- phosphonobutane- 1 ,2,4-tricarboxylic acid.
15. The process according to Claim 4, wherein said scale inhibitor is
iminodisuccinate attached via its salt form tetrasodium iminodisuccinate.
16. The process according to Claim 4, wherein said scale inhibitor is 2- phosphonobutane- 1 ,2,4-tricarboxylic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11792921.6A EP2576967B1 (en) | 2010-06-07 | 2011-06-03 | Process for transporting fracture ("frac") fluid additives to oil and gas wells utilizing ion exchange resin |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US79520410A | 2010-06-07 | 2010-06-07 | |
| US12/795,204 | 2010-06-07 | ||
| US12/859,897 US8087462B2 (en) | 2010-06-07 | 2010-08-20 | Process for transporting fracture (“FRAC”) fluid additives to oil and gas wells utilizing ion exchange resin |
| US12/859,897 | 2010-08-20 |
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| Publication Number | Publication Date |
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| WO2011156213A1 true WO2011156213A1 (en) | 2011-12-15 |
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| PCT/US2011/039003 WO2011156213A1 (en) | 2010-06-07 | 2011-06-03 | Process for transporting fracture ("frac") fluid additives to oil and gas wells utilizing ion exchange resin |
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| Country | Link |
|---|---|
| US (1) | US8087462B2 (en) |
| EP (1) | EP2576967B1 (en) |
| WO (1) | WO2011156213A1 (en) |
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| US9771511B2 (en) * | 2012-08-07 | 2017-09-26 | Halliburton Energy Services, Inc. | Method and system for servicing a wellbore |
| US10221082B2 (en) * | 2013-10-25 | 2019-03-05 | Lanxess Sybron Chemicals Inc. | Amelioration of acid mine drainage |
| CN106753320B (en) * | 2016-12-30 | 2020-05-15 | 中国地质大学（武汉） | Ionic crosslinking modified ultralow-density proppant and preparation method thereof |
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|---|---|---|---|---|
| US4199680A (en) * | 1977-11-14 | 1980-04-22 | Cardinal Surveys Company | Method of treating and logging wells |
| US5728302A (en) * | 1992-04-09 | 1998-03-17 | Groundwater Services, Inc. | Methods for the removal of contaminants from subterranean fluids |
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|---|---|---|---|---|
| DE3031737A1 (en) | 1980-08-22 | 1982-04-01 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING PEARL POLYMERISATS OF UNIFORM PARTICLE SIZE |
| CA1166413A (en) | 1980-10-30 | 1984-05-01 | Edward E. Timm | Process and apparatus for preparing uniform size polymer beads |
| US4419245A (en) | 1982-06-30 | 1983-12-06 | Rohm And Haas Company | Copolymer process and product therefrom consisting of crosslinked seed bead swollen by styrene monomer |
| US5231115A (en) | 1991-12-19 | 1993-07-27 | The Dow Chemical Company | Seeded porous copolymers and ion-exchange resins prepared therefrom |
| DE19826049A1 (en) | 1998-06-12 | 1999-12-16 | Bayer Ag | Process for the preparation of crosslinked spherical polymers |
| US8163826B2 (en) * | 2006-11-21 | 2012-04-24 | Schlumberger Technology Corporation | Polymeric acid precursor compositions and methods |
| US7841411B2 (en) | 2007-12-14 | 2010-11-30 | Schlumberger Technology Corporation | Use of polyimides in treating subterranean formations |
| US8714258B2 (en) * | 2010-06-07 | 2014-05-06 | Lanxess Sybron Chemicals Inc. | Process for transporting fracture (“frac”) fluid additives to oil and gas wells utilizing ion exchange resin |
-
2010
- 2010-08-20 US US12/859,897 patent/US8087462B2/en active Active
-
2011
- 2011-06-03 WO PCT/US2011/039003 patent/WO2011156213A1/en active Application Filing
- 2011-06-03 EP EP11792921.6A patent/EP2576967B1/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4199680A (en) * | 1977-11-14 | 1980-04-22 | Cardinal Surveys Company | Method of treating and logging wells |
| US5728302A (en) * | 1992-04-09 | 1998-03-17 | Groundwater Services, Inc. | Methods for the removal of contaminants from subterranean fluids |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2576967A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2576967A4 (en) | 2014-02-19 |
| EP2576967B1 (en) | 2015-06-03 |
| EP2576967A1 (en) | 2013-04-10 |
| US20110297382A1 (en) | 2011-12-08 |
| US8087462B2 (en) | 2012-01-03 |
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